Postpartum complications in cows: diagnosis, treatment, prevention

Abstract

This review contains an analysis of domestic and foreign researchers regarding the occurrence of postpartum complications in cows, which represents a significant veterinary problem. Diagnostic methods and treatment regimens for postpartum pathologies of various origins are presented. Difficulties and errors in diagnosing uterine inflammation lead to improper treatment, prolonged infertility, and significant economic losses. Based on an analysis of the literature, it has been proven that clinical forms of endometritis often develop into a subclinical course. The proportion of hidden endometritis can account for up to 80 % of the total amount of endometrial inflammation. The problem with postpartum complications of the uterus is that the inflammatory processes spread to the ovaries, and this can lead to complete infertility in animals. Rectal examination of cows remains one of the primary methods for diagnosing endometritis. Treatment generally involves the use of a wide range of antibiotics. Data on the hormonal causes of postpartum pathologies of the reproductive system of cows are also presented. A big problem is follicular and luteal cysts, their timely diagnosis and appropriate treatment. The leading cause of cysts is a disruption of the hypothalamic-pituitary-gonadal axis. A practical method for diagnosing cysts is ultrasound, and the type of cyst can be determined by the level of progesterone in the blood. A practical method of treating cysts is the use of hormonal drugs. Data are also presented confirming the significant role of microflora in the occurrence of inflammatory changes in the reproductive organs of cows. The main types of causative agents of inflammatory processes in the genital organs of cows in the postpartum period are given. In cows with endometritis, an imbalance of the uterine microflora is detected, and the growth of bacteria of the genus Bacteroidetes and Fusobacteria with a simultaneous decrease in the number of Proteobacteria and Tenericutes. Data are presented that rumen acidosis can cause inflammation of the uterus, and this is associated with the penetration of Fusobacterium necrophorum into the blood circulation. The effectiveness of intravaginal treatment of cows with a mixture of lactic acid bacteria (L. rhamnosus, P. acidilactici, and L. reuteri) has been shown.